Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/49—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
  • A61K8/4906—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with one nitrogen as the only hetero atom
  • A61K8/4913—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with one nitrogen as the only hetero atom having five membered rings, e.g. pyrrolidone carboxylic acid
  • A61K8/492—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with one nitrogen as the only hetero atom having five membered rings, e.g. pyrrolidone carboxylic acid having condensed rings, e.g. indol
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q5/00—Preparations for care of the hair
  • A61Q5/10—Preparations for permanently dyeing the hair

Definitions

• the subject of the present invention is the use of a metal salt in a process for dyeing keratin fibers in two stages using an indole compound.
• 5,6-Dihydroxyindole is generally used in aqueous compositions with which it is possible to dye keratin fibers and in particular the hair, this dyeing being able to be carried out in several times or gradually without any other oxidizing agent than oxygen. the air. It is possible in this way to repigment the hair starting from relatively light shades by an application of the product, even in more and more sustained shades, by superposition of the applications.
• a subject of the invention is therefore the use of a metal salt, in a two-stage dyeing process for keratin fibers and in particular human keratin fibers such as the hair, firstly using a composition ( A) containing, in a medium suitable for dyeing, at least one indolic compound of formula (I) below: in which : R 1 , R 2 , R 3 , R 4 ; identical or different, denote a hydrogen atom or a C 1 -C 4 alkyl radical, R 1 , R 2 , R 3 denoting hydrogen when R 4 denotes a C 1 -C 4 alkyl radical, and in a second step , a composition (B) containing in a medium suitable for dyeing at least one metal salt chosen from compounds having a catalytic activity of oxidation by air and whose normal oxidation-reduction potential E 0 is less than - 0.25V, in order to obtain colorations in gray shades which do not change over time.
• a composition ( A) containing
• the Applicant has observed in particular that the colorings obtained are particularly resistant to light and this is superior to the state of the art, that is to say that the light does not cause significant degradation over time of the colorations. obtained. These colors also have good resistance to repeated washing and perspiration.
• the alkyl radical preferably denotes methyl or ethyl and R 1 , R 2 and R 3 do not simultaneously denote a C 1 -C 4 alkyl radical.
• the preferred indole compounds of formula (I) are chosen from 5,6-dihydroxyindole, 2-methyl 5,6-dihydroxyindole, 3-methyl 5,6-dihydroxyindole, 1-methyl 5,6-dihydroxyindole, 2,3-dimethyl 5,6-dihydroxyindole, 5-methoxy 6-hydroxyindole.
• a particularly preferred indole compound of formula (I) is 5,6-dihydroxyindole.
• the particular metal salt (s) of the invention can be used in dissolved or dispersed form and are more particularly chosen from manganese, zinc, iron and / or cobalt salts. These salts can be used alone or as a mixture.
• Examples of such compounds are manganese diacetate tetrahydrate, manganese dichloride and its hydrates, manganese dihydrogen carbonate, manganese acetylacetonate, manganese triacetate and its hydrates, manganese trichloride, zinc dichloride, zinc diacetate dihydrate, zinc carbonate, zinc dinitrate, zinc sulfate, iron dichloride, iron sulfate, iron diacetate, cobalt diacetate tetrahydrate, cobalt carbonate, cobalt dichloride , cobalt dinitrate, cobalt sulfate heptahydrate.
• Manganese diacetate tetrahydrate and zinc dichloride are particularly preferred.
• the metal salt or salts used according to the invention are generally used in proportions of between 0.001 and 4% by weight of metal equivalent relative to the total weight of the composition (B) and preferably between 0.005 and 2% by weight of metal equivalent relative to the total weight of the composition (B).
• compositions (A) and (B) are preferably separated by a rinsing step.
• Composition (A) containing at least one indolic compound of formula (I) is applied to keratin fibers and in particular human keratin fibers such as the hair with an exposure time generally between 15 seconds and 30 minutes.
• Composition (B) containing the metal salt or salts of the invention is applied to keratin fibers and in particular human keratin fibers such as the hair with an exposure time generally between 15 seconds and 30 minutes.
• the dyeing process using at least one metal salt of the invention is carried out using no other oxidant than oxygen in the air.
• the indole compound (s) of formula (I) used according to the invention are generally used in proportions sufficient to repigment the keratin fibers and in particular the hair. These proportions are preferably between 0.1 and 5% by weight and even more preferably between 0.2 and 3% by weight relative to the total weight of the composition (A).
• compositions (A) and (B) are preferably aqueous or consist of a mixture of water and a cosmetically acceptable solvent.
• compositions contain a cosmetically acceptable solvent
• this can be chosen from lower C 1 -C 4 alcohols such as ethanol, propyl alcohol, isopropyl alcohol, tert-butyl alcohol; glycols such as ethylene glycol, propylene glycol; glycol ethers such as monomethyl, monoethyl or monobutyl ethers of ethylene glycol, monomethyl ethers of propylene glycol and dipropylene glycol; lower esters such as methyl lactate and ethylene glycol monoethyl ether acetate.
• the particularly preferred solvents are chosen from ethanol and propylene glycol.
• the solvents preferably represent from 0.5 to 50% by weight and preferably from 2 to 20% by weight relative to the total weight of the composition (A) or (B).
• composition (A) used according to the invention generally has a pH of between 5 and 10 and preferably between 7 and 9.5. This pH is adjusted using basifying or acidifying agents conventionally used in the field of hair dyeing.
• basifying agents there may be mentioned by way of example, ammonia, alkanolamines such as for example mono-, di- and triethanolamines and their derivatives, sodium or potassium hydroxides such as for example sodium hydroxide and potash, alkylamines, alkali or ammonium carbonates.
• alkanolamines such as for example mono-, di- and triethanolamines and their derivatives
• sodium or potassium hydroxides such as for example sodium hydroxide and potash
• alkylamines alkali or ammonium carbonates.
• acidifying agents mention may be made, for example, of orthophosphoric acid, lactic acid, acetic acid, tartaric acid, hydrochloric acid and citric acid.
• composition (B) used according to the invention generally has a pH of between 5 and 11 and preferably between 7 and 10. This pH is adjusted using basifying or acidifying agents conventionally used in the field of dyeing of hair and as described above.
• compositions (A) and / or (B) used according to the invention can be in the form of more or less thickened lotions, gels, shampoos, emulsions such as milks and creams or they can be propelled in the form of aerosol foams.
• the composition (A) is in the form of a gel and the composition (B) in the form of a shampoo.
• composition (A) in the form of a gel and containing the indole compound (s) of formula (I) is applied to the keratin fibers with an exposure time varying between 15 seconds and 30 minutes then after rinsing at water, composition (B) in the form of a shampoo and containing the metal salt or salts used according to the invention is emulsified on the fibers for a few seconds to a few minutes. The fibers are then rinsed and dried.
• compositions (A) and / or (B) may also contain at least one adjuvant chosen from the adjuvants conventionally used in the compositions for the hair dyeing such as anionic, cationic, nonionic, amphoteric, zwitterionic surfactants or their mixtures, mineral or organic thickening agents, antioxidants, penetration agents, sequestering agents, perfumes, buffers, dispersing agents, conditioning agents, film-forming agents, preserving agents, opacifying agents, sun filters, etc.
• adjuvants chosen from the adjuvants conventionally used in the compositions for the hair dyeing such as anionic, cationic, nonionic, amphoteric, zwitterionic surfactants or their mixtures, mineral or organic thickening agents, antioxidants, penetration agents, sequestering agents, perfumes, buffers, dispersing agents, conditioning agents, film-forming agents, preserving agents, opacifying agents, sun filters, etc.
• composition A is prepared: - 5,6-dihydroxyindole 0.5 g - Xanthan gum 1.8g - Alkylpolyglucoside in aqueous solution at 60% of active material (MA) sold by the company SEPPIC 4 g - Tartaric acid 0.35 g - Ethanol 12 g - Triethanolamine qs pH 8.5 - Demineralized water qs 100g
• composition (B 1 ) is prepared, which is a shampoo not forming part of the invention: - Copra acid monoisopropanolamide sold by the company ALLBRIGHT ET WILSON SAINT MIHIEL 2.5g - Monoethanolamine lauryl ether sulfate in an aqueous solution containing 28% of MA 40 g - Cocoylbetaine in 32% aqueous solution of MA sold by the company HENKEL 10 g - Ricinoleic monoethanolamide monosulfosuccinate, disodium salt sold by the company WITCO 2 g - Sodium hydroxide qs pH 9.5 - Perfume qs - Demineralized water qs 100g
• composition (B 2 ) is prepared, which is a shampoo forming part of the invention: - Copra acid monoisopropanolamide sold by the company ALLBRIGHT ET WILSON SAINT MIHIEL 2.5g - Monoethanolamine lauryl ether sulfate in an aqueous solution containing 28% of MA 40 g - Manganese diacetate, tetrahydrate 1 g - Cocoylbetaine in 32% aqueous solution of MA sold by the company HENKEL 10 g - Ricinoleic monoethanolamide monosulfosuccinate, disodium salt sold by the company WITCO 2 g - Sodium hydroxide qs pH 9.5 - Perfume qs - Demineralized water qs 100g
• Composition (A) is applied to two strands of natural gray hair containing 90% white hair for 10 minutes and then rinsed with water.
• the composition (B 1 ) is then applied to the first lock, which is emulsified for approximately 30 seconds and then rinsed with water.
• the composition (B 2 ) is then applied to the second lock, which is emulsified for approximately 30 seconds and then rinsed with water. The two locks are then dried.
• the two locks have an identical metallic gray coloration.
• the two locks are then left in the open air and in natural light for a period of three weeks. It is then observed that the lock having undergone shampooing with the composition (B 1 ) not forming part of the invention has a coloration which has become golden gray while the lock having undergone the shampoo with the composition (B 2 ) forming of the invention always has a metallic gray coloring.
• composition (B 3 ) is prepared, which is a shampoo forming part of the invention: - Copra acid monoisopropanolamide sold by the company ALLBRIGHT ET WILSON SAINT MIHIEL 2.5g - Monoethanolamine lauryl ether sulfate in an aqueous solution containing 28% of MA 40 g - Zinc dichloride 1 g - Cocoylbetaine in 32% aqueous solution of MA sold by the company HENKEL 10 g - Ricinoleic monoethanolamide monosulfosuccinate, disodium salt sold by the company WITCO 2 g - Sodium hydroxide qs pH 9.5 - Perfume qs - Demineralized water qs 100g
• composition (A) as described in Example 1 above is applied to two locks of natural gray hair containing 90% white for 10 minutes and then rinsed with water.
• the composition (B 1 ) as described above in Example 1 is then applied to the first lock, which is emulsified for approximately 30 seconds and then rinsed with water.
• the composition (B 3 ) is then applied which is emulsified for approximately 30 seconds and then rinsed with water. The two locks are then dried.
• the two locks are then again subjected to the treatment described above and then they are left in the open air and in natural light for a period of three weeks.
• L indicates clarity. The higher the value of L, the lighter the color. Conversely, the lower the value of L, the darker the color and therefore more powerful.
• Hue and saturation are expressed by a and b.
• a and b indicate two color axes, a red green axis and b yellow blue axis.
• a positive value of a corresponds to a red tint the more saturated the higher the absolute value of a.
• a negative value of a corresponds to a green tint the more saturated the higher the absolute value of a.
• a positive value of b corresponds to a yellow tint the more saturated the higher the absolute value of b.
• a negative value of b corresponds to a blue tint the more saturated the higher the absolute value of b.
• the locks dyed with the composition B 3 forming part of the invention After three weeks, the locks dyed with the composition B 3 forming part of the invention have a color that has changed less than that of the locks dyed with the composition B 1 not forming part of the invention.

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• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Birds (AREA)
• Epidemiology (AREA)
• Cosmetics (AREA)
• Coloring (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=9465675

Family Applications (1)

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• 1994
  • 1994-07-22 FR FR9409116A patent/FR2722684A1/fr active Granted
• 1995
  • 1995-06-29 EP EP19950401567 patent/EP0697211B1/fr not_active Revoked
  • 1995-06-29 DE DE1995600063 patent/DE69500063T2/de not_active Revoked
  • 1995-06-29 ES ES95401567T patent/ES2095788T3/es not_active Expired - Lifetime

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